JPH0349432Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a mounting device for electrical components that is often used in audio, video, measuring devices, and the like.

(Prior Art) Conventionally, when installing electrical components such as input/output terminals on a panel such as a back plate, there are two methods: aligning the electrical components with predetermined positions on the panel and fixing them directly with fixing means such as screws or rivets; There are many methods in which a protruding locking portion that elastically locks onto an electrical component is engaged with a locking hole provided at or near the edge of an opening in a panel.

As an electrical connection means for electrical parts,
There are cases where the connection is made using lead wires and connectors, and cases where the connection is made directly to a printed wiring board.

However, recently, electrical components are mechanically and electrically connected directly to the printed wiring board in advance without using connections such as lead wires and connectors, and when assembling the electrical components to the panel, it is possible to connect the electrical components to the panel. Many are fastened using screws, rivets, etc.

In this case, the electrical component is fixed to the printed wiring board, but the electrical component must be held in some way to withstand the pressure force during tightening, or the pressure force must be applied to the electrical component from the opposite side of the tightening direction. It is necessary to perform the tightening work at a low temperature.

Therefore, the tightening work is time-consuming, and the apparatus becomes complicated, especially when an automatic screw tightening machine is used as the assembly work is automated.

Therefore, in order to facilitate the tightening and fixing work of electrical parts using automatic machines, the inventors of the present invention
We proposed a device as shown in Publication No. 118791.

The device proposed earlier inserts a locking piece provided on the base of an electrical component into a locking hole in a panel as a mounting member, and engages a locking claw formed on the locking piece with the panel. In this state, the base of the electrical component and the panel are connected with screws.

(Problem to be solved by the invention) By the way, when the panel on which the electrical parts are mounted is formed from a steel plate, etc., the locking holes are punched out from the outside to the inside using pins in a mold. Therefore, many burrs occur around the locking holes on the inner surface of the panel, that is, on the side where electrical components are attached. On the other hand, the locking pieces for electrical parts are
It is integrally formed with the base from synthetic resin.

As a result, when inserting the locking piece of an electrical component into the locking hole of the panel from the inside, problems such as the locking piece getting stuck on the burr or being jammed due to errors during assembly may occur. , there is a problem in that it cannot be engaged quickly.

Furthermore, conventionally, in the case of a ground contact attached to an electrical component, a terminal piece protruding from one end is grounded to a chassis formed from a metal plate placed below a printed circuit board. However, recently, chassis are sometimes molded from insulating materials such as synthetic resins. Therefore, in order to ground the terminal piece of the earth contact to a panel formed from a metal plate, it is necessary to connect the terminal piece and the panel. must be connected by some means,
There is a problem in that the work requires time and effort.

The present invention is an attempt to solve the above-mentioned problems, and is capable of reliably fixing an electrical component to a mounting member and quickly inserting a locking piece into a locking hole without being affected by burrs or assembly errors. To guide and engage the locking piece, to enable smooth engagement between the locking piece and the locking hole, and to facilitate grounding of the earth contact attached to the electrical component. The purpose is to

[Structure of the idea]

(Means for Solving the Problems) The electrical component mounting device of the present invention includes an electrical component 1 in which a ground contact 5 made of an elastic metal plate is provided on a base 2, and a mounting member to which the electrical component 1 is attached. 17, the electrical component 1 includes:
Several truncated conical engagement protrusions 12 are provided on the base 2, and the ground contact 5 has a plurality of engagement protrusions 12 that protrude in the same direction as the engagement protrusions 12 and have locking claws 9 at their tips. The locking piece 7 is integrally formed, and the amount of protrusion of the locking piece 7 is made smaller than the amount of protrusion of the engaging protrusion 12. At the same time, several engaging holes 21 are drilled through which the locking pieces 7 are inserted, and locking holes 19 are drilled through which the locking pieces 7 are inserted. The ground contact 5 is inserted into each engagement hole 21 and
The locking claws 9 of each of the locking pieces 7 are engaged with the locking holes 19 of the mounting member 17, and a fixing device such as a screw 22 is inserted into the gap between the locking pieces 7. Therefore, the electrical component 1 is fixed to the mounting member 17.

(Function) In the present invention, when attaching the electrical component 1 to the mounting member 17, first, several engagement protrusions 12 of the base 2 of the electrical component 1 are inserted into several engagement holes 21 of the attachment member 17, respectively. At the same time, a plurality of locking pieces 7 protruding from the ground contact 5 of the electrical component 1 in the same direction as the engaging projections 12 are inserted into and engaged with the locking holes 19 of the mounting member 17, and the locking pieces 7 are inserted into the mounting member 17. Temporarily fix the electrical component 1. At this time, the truncated conical engagement protrusion 12 is smoothly inserted into the engagement hole 21. Furthermore, since the amount of protrusion of the locking piece portion 7 is smaller than the amount of protrusion of the engagement protrusion 12, the amount of protrusion of the engagement protrusion 12
is inserted into the engagement hole 21 first, but as it is inserted, the engagement protrusion 12 becomes truncated conical.
By gradually positioning the electrical component 1 with respect to the mounting part 17, the locking piece 7, which is formed integrally with the earth contact 5 made of a metal plate and has a locking claw part 9 at its tip, is removed. Regardless, these locking pieces 7 are smoothly inserted into the locking holes 19. In other words, even if there are burrs or dimensional errors in the engaging hole 21 or the locking hole 19,
The engaging protrusion 12 is inserted smoothly, and in combination with the elasticity of the ground contact 5, the locking piece 7
is inserted smoothly. Next, when a fixing device such as a screw 22 is inserted into the gap between the locking pieces 7 through the locking hole 19 of the mounting member 17, the earth contact 5 made of the metal plate on which the locking piece 7 is formed is connected. Due to elasticity, the plurality of locking pieces 7 are expanded and the locking claws 9 of these locking pieces 7 are kept engaged with the edge of the locking hole 19, so that electricity is The component 1 is firmly fixed to the mounting member 17. In addition, mounting member 1
If 7 is formed of a metal plate, the earth contact 5 is grounded to the mounting member 17 by engagement between the locking piece 7 and the locking hole 19 of the mounting member 17 .

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Reference numeral 1 designates a pin jack for input/output as an electrical component, and this pin jack 1 has a base 2 made of synthetic resin with four pin plug receivers 3 protruding from the front surface thereof, and each of the above-mentioned pin plug receivers on the back surface of the base body 2. Plug contacts 4 connected to 3 respectively
A ground contact 5 commonly connected to the pin plug receiver 3 is provided facing downward. On this ground contact 5, a pair of upper and lower locking pieces 7 are integrally protruded toward the front with a small gap between them. A triangular locking claw portion 9 is formed,
The outer edge of each of these locking pawls 9 forms a tapered guide edge 10. And each of these locking pieces 7
are inserted into an insertion hole 11 extending in the vertical direction, which is formed in a substantially central portion of the front surface of the base body 2, so as to be expandable due to the spring properties of each of the locking pieces 7. Further, engagement protrusions 12 in the shape of an elongated truncated cone are integrally provided on the upper and lower portions of the base body 2, respectively, and protrude toward the front. The amount of protrusion of these engaging protrusions 12 is greater than the amount of protrusion of the locking piece portion 7.

Reference numeral 13 denotes a printed wiring board, on which the pin jack 1 is attached via its plug contact 4 and ground contact 5, and other electrical components 14 are mounted on the printed wiring board 13. installed. Then, the printed wiring board 13 is connected to the chassis 1.
5 with a plurality of screws 16.

Reference numeral 17 designates a panel such as a back plate as a mounting member, and this panel 17 is provided with protruding holes 18 corresponding to the respective pin plug receivers 3 of the pin jack 1, and between the protruding holes 18, the aforementioned insertion holes are formed. A locking hole 19 extending in the vertical direction corresponding to the hole 11 is bored, and a widened circular portion 20 is formed in the center of the locking hole 19 . Also,
Engagement holes 21 are formed at the upper and lower portions of this locking hole 19, through which the respective engagement protrusions 12 are inserted.

To attach the pin jack 1 to the panel 17, first, attach the panel 1 to the pin jack 1.
7 is arranged, each pin plug receiver 3 is made to protrude from each protrusion hole 18 from the back side of this panel 17, and the base 2
While inserting each of the engaging protrusions 12 into each of the engaging holes 21,
is inserted into the locking hole 19 of the panel 17, the locking claw portion 9 of the locking piece 7 is engaged with the upper and lower edges of the locking hole 19, and the pin jack 1 is attached to the panel 17. Temporarily fix. In addition, at this time, since the amount of protrusion of the locking piece 7 is smaller than the amount of protrusion of the engagement protrusion 12, the engagement protrusion 12 first engages the engagement hole 2.
1 is inserted.

Next, the tapping screw 22 is inserted from the front between the locking pieces 7 through the circular portion 20 of the locking hole 19, and each locking piece 7 is elastically expanded. The locking claws 9 are brought into pressure contact with the upper and lower edges of the locking hole 19. In this state, the state in which the locking claw portion 9 is engaged with the locking hole 19 is reliably maintained, and the pin jack 1 is securely and firmly fixed to the panel 17.

Additionally, a bonnet 23 is installed on the top of the panel 17.
Fix the edges with tapping screws 24.

In this assembly, the pin jack 1 and other electrical components 14 are arranged on the printed wiring board 13, and their terminals are soldered using an automatic soldering device, and then the printed wiring board 13 is placed inside the electrical equipment. The panel 17 of the electrical equipment is fixed to the chassis 15, and in the final stage, the panel 17 of the electrical equipment is attached to the pin jack 1.
In this state, the panel 17 is fixed by tightening the screws 22 from outside the electrical equipment using an automatic screw tightening machine, and at the same time, tightening the screws 24 from the same direction. Tighten to secure the bonnet 23.

By doing so, the locking piece 7 of the earth contact 5 formed of a metal plate has a significantly increased elastic force compared to one made of synthetic resin, and the metal plate is plated. As the sliding becomes even better, it becomes easier to absorb assembly errors, and the locking hole 19 of the panel 17 and the locking piece are not affected by some burrs in the locking hole 19. By matching the portions 7, engagement can be easily achieved. In addition, the locking piece 7 can easily perform the engagement action by providing a tapered guide edge 10 on the locking claw 9 at the tip.

By engaging the locking claw part 9 with the locking hole 19, when inserting the screw 22 between the locking pieces 7, the screw 22 can be screwed without the need for holding means such as holding down the pin jack 1 from behind. 22 can be inserted.

Furthermore, since each of the engaging protrusions 12 is all shaped like a truncated cone, even if there are some burrs in the engaging hole 21 of the panel 17, or even if there is a slight dimensional error, each engaging protrusion 12 It is inserted smoothly into the matching hole 21.

By the way, the locking piece 7, which is formed integrally with the earth contact 5 made of an elastic metal plate and has a locking claw 9 at its tip, can be locked as described above if the positioning is done properly to some extent. Stop hole 19
Although it is extremely easy to insert the tube into the tube, if the positioning is poor, there is a risk of plastic deformation, which may even impair the smoothness of the tube. However, the pair of engagement protrusions 12 are inserted into the pair of engagement holes 21 of the panel 17 prior to the locking piece 7, and as they are inserted, the engagement protrusions 12 have a truncated conical shape, and the attachment part As the electrical component 1 is gradually and reliably positioned relative to 17, its guidance allows
The locking piece 7 is inserted into the locking hole 19 very smoothly. Thereby, the advantage of forming the locking piece 7 on the ground contact 5 can be maximized.

Thus, according to the above configuration, when the panel 17 is formed by pressing an iron plate, for example, the locking holes 1
The pin jack 1 can be reliably attached to the panel 17 without being affected by burrs appearing on the back side of the pin 9 or the engagement hole 21, or poor accuracy due to design errors or assembly errors, and ease of assembly is improved. Improved and automated tightening operations are performed smoothly and easily.

Furthermore, integrally forming the locking piece 7 on the earth contact 5, which can be made into a flat press-molded product that is easy to process, has the effect of lowering costs and improving manufacturability. By making the earth contact 5 from a metal plate, the earth contact 5 can be coupled to the printed wiring board 13, the earth contact 5 can be integrally assembled to the pin jack 1, and the locking piece that should have elasticity can be formed. 7 can be easily formed.

Further, a part of the ground contact 5 is made into a locking piece 7, and when this locking piece 7 is attached to the panel 17 of the pin jack 1, it is constructed so as to be brought into pressure contact with the edge of the locking hole 19 of this panel 17. Therefore, even if the chassis 15 is made of an insulating material such as synthetic resin, if the panel 17 is made of a metal plate, the engagement between the locking piece 7 and the locking hole 19 of the panel 17 will cause Since the earth contact 5 is grounded to the panel 17 and the work of attaching the pin jack 1 also serves as the work of grounding the earth contact 5, the grounding work becomes easy and work efficiency can be further improved.

In the above embodiment, the tapping screw 22 is screwed between the locking pieces 7, but instead of the screw 22, a wedge-shaped fastener is press-fitted between the locking pieces 7. Good too. By doing so, the work of attaching the pin jack 1 can be further simplified.

Further, as electrical components, in addition to pin jacks having four pin plug holders, pin jacks having 2 to 6 or more pin plug holders, terminal devices, switches, volumes, outlets, etc. can also be used.

In addition, three or more engaging protrusions 12 may be provided at predetermined positions, such as on the left and right sides, in addition to the upper and lower positions of the electrical component.

Furthermore, the setting positions and numbers of the earth contact 5 and the locking pieces 7 formed thereon are not limited to those of the above embodiments, and may be selected as appropriate.

In addition to automatic tightening means, manual tightening is also effective.

[Effect of idea]

According to the present invention, a plurality of locking pieces having locking claws at the tips are integrally provided to project from a ground contact made of an elastic metal plate provided on an electrical component, and these locking pieces are Since the locking piece is inserted into the locking hole of the mounting member and is locked, the locking piece is formed as a metal piece with spring properties, which increases the tolerance for assembly errors and prevents burrs from forming in the locking hole. Even if it is not affected by it,
The engagement between the locking piece and the locking hole can be carried out smoothly and easily. Furthermore, since a fixing device such as a screw is inserted between the locking pieces, the electrical component can be reliably fixed to the mounting member. Further, since a part of the earth contact is made into a locking piece, it is possible to reduce the cost, and the work of attaching the electric parts can also serve as the work of grounding the earth contact, making the work of grounding easier. Furthermore, since the ground contact is made of an elastic metal plate, it has good workability. Furthermore, several truncated conical engagement protrusions are formed on the base of the electrical component to be inserted into the engagement holes of the mounting part, and the amount of protrusion on the locking piece is greater than the amount of protrusion of these engagement protrusions. Because of the small size, while the engaging protrusion is inserted smoothly into the engaging hole, the electric component is positioned relative to the mounting part as the engaging protrusion is inserted into the engaging hole. Although the locking pieces are formed in the earth contact and have a locking claw part at the tip, these locking pieces can be inserted into the locking hole very smoothly, and the earth contact described above is The advantage of forming the locking piece can be maximized.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the device of the present invention, Fig. 2 is a partially enlarged sectional view showing the state in which the fixing device is inserted, and Fig. 3 is an exploded perspective view of the main parts of the same. . 1...Pin jack as an electrical component, 2...
Base body, 5... Earth contact, 7... Locking piece portion, 9... Locking claw portion, 12... Engaging protrusion, 17...
... Panel as a mounting member, 19 ... Locking hole, 2
1... Engagement hole, 22... Screw as a fixing tool.

Claims (1)

[Claims for Utility Model Registration] An electrical component comprising a base body provided with an earth contact made of an elastic metal plate, and a mounting member for attaching the electrical component; a truncated conical engagement protrusion is provided protrudingly, and a plurality of engagement pieces protruding in the same direction as the engagement protrusion are integrally formed on the ground contact and having a engagement claw portion at a tip; and the protrusion amount of the locking piece is smaller than the protrusion amount of the engagement protrusion, the mounting member is provided with several engagement holes through which each of the engagement protrusions is inserted, and A locking hole is drilled through which the locking piece is inserted, each of the engaging protrusions of the electrical component is inserted into each of the locking holes of the mounting member, and the locking claw of each locking piece of the earth contact is inserted into the locking hole. The electrical component is fixed to the mounting member by engaging with the locking hole of the mounting member and inserting a fixing tool such as a screw into the gap between the locking pieces. Mounting device.